Datasheet > MAX5862

MAX5862

更新时间： 2023-12-20 18:46:26

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
111页	3962K
描述
高密度下行电缆QAM调制器

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MAX5862 数据手册

EVALUATION KIT AVAILABLE

MAX5862

High-Density Downstream Cable QAM Modulator

General Description

Beneﬁts and Features

●ꢀ IntegratedꢀDownstreamꢀCableꢀQAMꢀModulator

• High-Density: 8, 16, 24, or 32 QAM Channels

• 14-Bit 4.6Gsps RF-DAC

The MAX5862 is an integrated, high-density, downstream

cable QAM modulator, digital upconverter (DUC) and

RF digital-to-analog converter (RF-DAC). The device

performs QAM mapping, pulse shaping and digital RF

upconversion of forward-error-correction (FEC) encoded

data with full agility and drives a single RF-port using a

14-bit 4.6Gsps DAC. The device digitally synthesizes RF

signals with up to 32 DOCSIS-compliant 6MHz QAM or

8MHz QAM channels. The device has fixed QAM capacity

and provides high-density QAM modulation with very low

power dissipation (4.2W at 32 QAMs) in a compact 12mm

x 17mm footprint.

• DOCSIS 3.0 DRFI Compliant

●ꢀ HighlyꢀFlexibleꢀandꢀConfigurable

• RRC Filters Support ITU-T J.83 Annex A, B, and C

• 1MHz to 8MHz Channel Bandwidth

• Full Carrier Agility within Each of Four 192MHz Blocks

Block Agility within 950MHz Output Bandwidth

• Reconfigurable Without Service Interruption

• Input Symbol Rate: 1Msym/s to 7.14Msym/s

Independently Set for Each Channel

• Integrated QAM Mapper (16/32/64/128/256-QAM)

Supports All ITU-T J.83-Defined Constellations

• CMOS Input Port Supports Up to 1024-QAM

The device accepts FEC-encoded CMOS data (symbols)

on a single 10-bit input port that accepts up to 32 time-inter-

leaved digital data streams. Each channel features an indi-

vidually configurable QAM mapper, RRC filter, and arbitrary

rate resampler (ARR). The device performs pulse shaping,

resampling, interpolation and quadrature modulation of input

data, supporting all data rates defined in DOCSIS 3.0 and

DVB-C. A cascade of interpolation filters, complex modula-

tors, and channel combiners allow modulation of the signal

to any frequency from 47MHz to 1006MHz. Integrated direct

digital frequency synthesizers allow positioning of the QAM

channels with a resolution of 125Hz. The interpolation filters

and resamplers provide linear phase and excellent gain flat-

ness. Output data from the last modulator is fed to a digital-

predistortion (DPD) block that can be used to correct distor-

tion in the device’s integrated RF-DAC and output amplifiers

external to the device.

●ꢀ AdditionalꢀFeaturesꢀEaseꢀRFꢀDesign

• Programmable Digital Predistortion

• High DAC Output Power 9dBm (CW) Eliminates Pre-amp

●ꢀ LowꢀPower,ꢀCompactꢀSolution

• 4.2W at 32 (6MHz) QAMs, f = 4.6Gsps

• 12mm x 17mm, 280-Ball FCBGA

Applications

●ꢀ Edge QAM, CMTS, CCAP, IP-QAM

●ꢀ Remote PHY, Coax Media Converters

●ꢀ Multi-Dweller Unit Mini-Headends

Ordering Information appears at end of data sheet.

Simpliﬁed Block Diagram

INPUT

TIMING

ONE PER BLOCK

(MAX 32 CHANNELS)

ONE PER SUB-BLOCK

(MAX 8 CHANNELS)

MAX5862

ONE PER CHANNEL

INPUT

DATA

INTERFACE

RRC

INPUT

DATA

ARR

14-BIT

4.6Gsps

DAC

QAM

MAPPER

COMPLEX

MODULATOR

COMPLEX

MODULATOR

COMPLEX

MODULATOR

DPD

RRC

ARR

NCO

SPI PORT

JTAG

For related parts and recommended products to use with this part, refer to www.maximintegrated.com/MAX5862.related.

19-6648; Rev 0; 7/13

12 3 4 5 6 7...111

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与MAX5862相关器件

型号	品牌	获取价格	描述	数据表
MAX5863	MAXIM	获取价格	Ultra-Low-Power, High-Dynamic Performance, 7.5Msps Analog Front End
MAX5863E/D	MAXIM	获取价格	Ultra-Low-Power, High-Dynamic Performance, 7.5Msps Analog Front End
MAX5863ETM	MAXIM	获取价格	Ultra-Low-Power, High-Dynamic Performance, 7.5Msps Analog Front End
MAX5863ETM+	MAXIM	获取价格	RF and Baseband Circuit, CMOS, 7 X 7 MM, 0.80 MM HEIGHT, TQFN-48
MAX5863ETM+T	MAXIM	获取价格	暂无描述
MAX5863ETM-T	MAXIM	获取价格	RF and Baseband Circuit, CMOS, 7 X 7 MM, 0.80 MM HEIGHT, TQFN-48
MAX5864	MAXIM	获取价格	Ultra-Low-Power, High-Dynamic- Performance, 22Msps Analog Front End
MAX5864	ADI	获取价格	超低功耗、高动态性能、22Msps模拟前端
MAX5864E/D	MAXIM	获取价格	Ultra-Low-Power, High-Dynamic- Performance, 22Msps Analog Front End
MAX5864ETM	MAXIM	获取价格	Ultra-Low-Power, High-Dynamic- Performance, 22Msps Analog Front End

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